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ffmpeg / libavcodec / chomp_bsf.c @ 2912e87a

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/*
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 * Chomp bitstream filter
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 * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com>
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "avcodec.h"
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#include "internal.h"
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static int chomp_filter(AVBitStreamFilterContext *bsfc,
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                        AVCodecContext *avctx, const char *args,
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                        uint8_t  **poutbuf, int *poutbuf_size,
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                        const uint8_t *buf, int      buf_size,
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                        int keyframe)
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{
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    while (buf_size > 0 && !buf[buf_size-1])
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        buf_size--;
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    *poutbuf = (uint8_t*) buf;
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    *poutbuf_size = buf_size;
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    return 0;
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}
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/**
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 * This filter removes a string of NULL bytes from the end of a packet.
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 */
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AVBitStreamFilter ff_chomp_bsf = {
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    "chomp",
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    0,
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    chomp_filter,
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};